// Copyright (c) 2025, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

method(int? i) => /*
 checkingOrder={int?,int,Null},
 error=non-exhaustive:int();null,
 subtypes={int,Null},
 type=int?
*/
    switch (i) {
      == null /*space=?*/ => null,
      != null /*space=?*/ => i,
    };
